Intake Side

Remove the collector cover.
1. Carefully pull up the rear of collector cover at two positions (A).
2. Carefully pull up the front of collector cover at two positions (B) while moving it forward.
  
  Fig 1: Removing Collector Cover
  Courtesy of SUBARU OF AMERICA, INC.
Disconnect the ground terminal from battery sensor. < Ref. to BATTERY , NOTE, Repair Contents. >
Disconnect the connector (A) from the intake oil flow control solenoid valve, and remove the intake oil flow control solenoid valve.
- RH side
  
  Fig 2: Locating Intake Oil Flow Control Solenoid Valve Connector Bolt (RH Side)
  Courtesy of SUBARU OF AMERICA, INC.
- LH side
  
  Fig 3: Locating Intake Oil Flow Control Solenoid Valve Connector Bolt (LH Side)
  Courtesy of SUBARU OF AMERICA, INC.